Scouring device and system for high-pressure water flow beam in cutter cylinder of shield tunneling machine

Abstract

The invention relates to the technical field of tunneling, in particular to a high-pressure water flow beam scouring device and system in a shield tunneling machine cutter cylinder. The high-pressure water flow beam assembly is arranged on the inner wall of the cutter cylinder of the shield tunneling machine and comprises a connecting base and a connecting spray head arranged on the outer wall of the connecting base, and a flow dividing component and a transmission component are arranged in the connecting spray head; the multiple high-pressure water flow beam assemblies are distributed in the cutter cylinder of the shield tunneling machine, the connecting spray head can circularly change the water flow direction and rotate back and forth through the unique flow dividing and transmission design, multi-angle washing is achieved, the interior of the cutter cylinder and the surface of a cutter are covered in an omnibearing mode, and external silt invasion is resisted. Meanwhile, the turbulent flow structure frequently changes the impact force of water flow, the stable state of sludge particles is broken, and the scouring effect on the sludge is improved. The flow dividing component can automatically switch the water flow direction, so that the connecting nozzle circularly changes the rotating direction, and it is ensured that water flow completely covers the cutter cylinder area.

Description

Technical Field

[0001] This application relates to the technical field of tunnel boring, in particular to a high-pressure water jet scouring device and system inside the cutter barrel of a shield machine. Background Art

[0002] During the underground boring operation of a shield machine, as a key component, the cutter barrel has an extremely harsh and complex working environment and faces the risk of a large amount of sediment influx, which seriously affects the normal operation and service life of the shield machine. Currently, some shield machines adopt the method of setting high-pressure water spray nozzles inside the cutter barrel, hoping to use high-pressure water jets to resist the intrusion of sediment outside the cutter barrel. However, the pressure of the water jet at the final exit is greatly reduced, making it difficult to form an effective sediment shielding barrier, and the sediment can still take advantage of the opportunity to enter and adhere to the inside of the cutter barrel and the surface of the cutters, increasing the risk of equipment wear and reducing the boring efficiency.

[0003] Chinese Patent with the authorization announcement number CN114151095B discloses a coaxial and different-speed shield machine / TBM equipped with a high-pressure water jet structure and a shield machine / TBM. The coaxial and different-speed shield machine / TBM equipped with a high-pressure water jet structure includes: a cutter head; a receiving guide rail provided on the cutter head; and a moving spray seat slidably connected to the receiving guide rail. An accommodation cavity is provided inside the moving spray seat, and a water knife nozzle is provided inside the accommodation cavity. The water knife nozzle is connected to a high-pressure water circuit through a pipeline. During operation, the moving spray seat is allowed to move freely along the receiving guide rail, and a tangential relative movement is allowed between the water knife nozzle and the cutter head, realizing the coaxial and different-speed rotation of the water knife nozzle and the cutter head, and solving the problems of too fast moving speed of the water knife nozzle, insufficient erosion time, and too low jet rock-breaking efficiency when the existing water jet is mounted on the shield machine / TBM.

[0004] However, this technical solution still has some technical problems: This solution does not solve the problem of insufficient water pressure when the water jet is ejected. At the same time, when the water knife nozzle is scouring, the impact force of the water flow is fixed, and the sludge adapts to the impact force of the water flow, which is not conducive to the in-depth treatment of the sludge. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, this application is proposed.

[0006] To solve the above technical problems, this application provides the following technical solution: A high-pressure water jet scouring device inside the cutter barrel of a shield machine, which includes a cutter barrel of a shield machine; A high-pressure water jet assembly provided on the inner wall of the cutter barrel of the shield machine, including a connection base and a connection nozzle provided on the outer wall of the connection base. A flow splitting component and a transmission component are provided inside the connection nozzle. The water flow entering the connection nozzle is circulated and divided into two directions through the flow splitting component, and the transmission component is driven by the water flows in different directions, so that the connection nozzle rotates back and forth outside the connection base; The outer wall of the connection base is sleeved with a shell and the end of the shell is provided with a flow disturbance structure. The flow disturbance structure is affected by the rotation of the connection nozzle to interfere with the sprayed water flow, thereby improving the flushing efficiency of the sludge by changing the impact force of the water flow.

[0007] As a preferred solution of the high-pressure water jet flushing device inside the shield machine barrel described in the present application, the end of the outer shell is fixed to the outer wall of the connecting base, and the inner wall of the outer shell is provided with a pushing structure. The pushing structure is affected by the rotation of the connecting nozzle, driving the spoiler structure at the end of the outer shell to open and close.

[0008] As a preferred solution of the high-pressure water jet flushing device inside the shield machine barrel described in the present application, the pushing structure includes a movable ring sleeved on the outer wall of the connecting nozzle, a slider is fixed to the outer wall of the movable ring, the end of the slider extends into a vertical groove opened on the inner wall of the outer shell, and the movable ring is restricted by the vertical groove and cannot rotate.

[0009] As a preferred solution of the high-pressure water jet flushing device inside the shield machine barrel described in the present application, wherein: the inner wall of the movable ring is provided with an inclined groove, and the inclined groove cooperates with the sliding column provided on the outer wall of the connecting nozzle, and the sliding column slides on the inner wall of the inclined groove to drive the movable ring to move on the outer wall of the connecting nozzle, the end of the movable ring is connected to a connecting rod and the end of the connecting rod is hinged to a guide rod, the end of the guide rod is hinged to a connecting ring and the connecting ring is sleeved on the outer wall of the water spray outlet at the end of the connecting nozzle.

[0010] As a preferred solution of the high-pressure water jet flushing device inside the shield machine barrel described in the present application, the flow disturbance structure includes a guide rod and a fan blade arranged on the outer wall of the guide rod, the end of the guide rod is hinged to the outer wall of the connecting ring and the connecting ring is fixed to the end of the outer shell, and the end of the guide rod is located in a recess opened at the end of the outer shell.

[0011] As a preferred solution of the high-pressure water jet flushing device inside the shield machine barrel described in the present application, wherein: the diversion component includes a steering plate, the steering plate is hinged to the inner wall of the connecting nozzle, the other end of the steering plate is connected to a rocker and the other end of the rocker is provided with a steering block, the end of the steering block extends to the inner wall of the arc groove opened at the end of the connecting nozzle and is located on the end face of the guide block fixed on the outer wall of the arc groove, the steering block and the guide block extend to the inner wall of the limiting ring fixed to the outer wall of the connecting base, and slide on the inner wall of the limiting groove opened on the inner wall of the limiting ring, when the guide block touches the inner wall of the limiting groove, the steering block rotates to drive the rocker to move the steering plate at the end to change the direction of water outflow.

[0012] As a preferred embodiment of the high-pressure water flow beam scouring device inside the cutter barrel of the shield machine described in this application, the following is provided: water outlet holes are symmetrically formed on the outer wall of the connecting nozzle, the turning plate is attached to the water outlet holes, a flow dividing plate is fixed on the side of the water outlet holes facing away from the turning plate, and a guiding plate is arranged at the end of the flow dividing plate. Different-direction flow channels are formed by the cooperation of the flow dividing plate and the guiding plate.

[0013] As a preferred embodiment of the high-pressure water flow beam scouring device inside the cutter barrel of the shield machine described in this application, the following is provided: a water wheel is arranged at the axis of the outer wall of the connecting nozzle, the other end of the water wheel extends to the inner wall of the connecting nozzle and is provided with a transmission gear, the transmission gear meshes with a reduction gear set arranged inside the connecting nozzle, and the end of the reduction gear set meshes with a fixed nozzle on the inner wall of the connecting base to drive the connecting nozzle to rotate at the end of the connecting base.

[0014] As a preferred embodiment of the high-pressure water flow beam scouring device inside the cutter barrel of the shield machine described in this application, the following is provided: an installation head is arranged on the outer wall of the connecting base, a pipeline is connected to the outer wall of the installation head, a flow guiding rib plate is arranged on the inner wall of the pipeline to reduce turbulent flow, an internal block is also fixed inside the connecting nozzle, a cavity is formed on the inner wall of the internal block, a support column is fixed on the inner wall of the cavity, a retaining ring is sleeved at the end of the support column, and a first elastic member is arranged on the outer wall of the retaining ring to push the retaining ring to make it close to the inner wall of the cavity.

[0015] An adjustment system, which is applied to the high-pressure water flow beam scouring device inside the cutter barrel of the above-mentioned shield machine, includes: a plurality of high-precision pressure sensors evenly distributed on the outer wall of the cutter barrel, a central control system, and a high-pressure water pump; The pressure sensors are used to monitor the changes in external soil pressure and water pressure in real time and transmit the data to the central control system; The central control system is built-in with an adaptive algorithm, and dynamically adjusts the output power and frequency of the high-pressure water pump according to the received pressure data to accurately control the water jet pressure and keep the water jet pressure in dynamic balance with the external pressure.

[0016] The beneficial effects of this application: In this application, multiple high-pressure water flow beam components are distributed inside the cutter barrel of the shield machine. Through the unique flow dividing and transmission design of the connecting nozzle, the water flow direction can be cyclically changed and the nozzle can rotate back and forth, realizing multi-angle scouring and fully covering the inside of the cutter barrel and the surface of the cutter. This can resist the intrusion of external sediment. At the same time, the frequent change of the water flow impact force by the turbulent flow structure breaks the stable state of the sludge particles and improves the scouring effect on the sludge. The flow dividing component can automatically switch the water flow direction, making the connecting nozzle cyclically change the rotation direction to ensure that the water flow fully covers the cutter barrel area. The design of the gradually expanding pressure-increasing chamber at the water spraying port guides the water flow to be sprayed along a predetermined path, reduces turbulence, stabilizes the water jet pressure at the outlet, and improves the efficiency of shielding sediment.

[0017] The device has an automatic water flow pressure regulation function, which can automatically relieve pressure when the internal water pressure of the connecting nozzle is too high, ensuring the operation stability. At the same time, the flow guiding rib plates in the pipeline reduce the water flow turbulence, providing stable water flow conditions for the overall scouring function. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of a high-pressure water flow beam scouring device inside the cutter barrel of a shield machine according to the present application; Figure 2 It is a schematic diagram of the structure of the high-pressure water flow beam assembly in the present application; Figure 3 It is a side cross-sectional view of the outer shell in the present application; Figure 4 It is an exploded schematic diagram of the internal structure of the outer shell in the present application; Figure 5 It is an exploded schematic diagram of the flow disturbance structure in the present application; Figure 6 It is a side view of the connecting nozzle in the present application; Figure 7 It is a schematic diagram of the positional relationship between the steering block and the guide block in the present application; Figure 8 It is a schematic diagram of the internal structure of the connecting nozzle in the present application; Figure 9 It is a side cross-sectional view of the water spray port in the present application; Figure 10 For Figure 9 the schematic diagram of the structure at position A in

[0020] Explanation of the reference numerals in the drawings: 100, cutter barrel of the shield machine; 200, high-pressure water flow beam assembly; 201, connecting base; 2011, mounting head; 2012, fixed nozzle; 2013, pipeline; 2014, flow guiding rib plate; 2015, limiting ring; 2016, limiting groove; 202, connecting nozzle; 2021, sliding column; 2022, arc groove; 2023, guide block; 203, water wheel; 2031, transmission gear; 204, water outlet hole; 2041, flow dividing plate; 2042, flow guiding plate; 205, built-in block; 2051, cavity; 2052, support pillar; 2053, retaining ring; 2054, first elastic member; 206, reduction gear set; 207, steering plate; 2071, rocker; 2072, steering block; 208, water spray port 300. Housing; 301. Vertical groove; 302. Notch; 303. Moving ring; 304. Slide block; 305. Inclined groove; 306. Link; 307. Connecting ring; 308. Guide rod; 309. Fan blade. Detailed implementation mode

[0021] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation mode of the present application in conjunction with the accompanying drawings of the specification.

[0022] In the following description, many specific details are set forth to fully understand the present application. However, the present application can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0023] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation mode of the present application. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an individual or alternative embodiment that is mutually exclusive with other embodiments.

[0024] Embodiment 1 This is the first embodiment of the present application, which provides a high-pressure water flow beam scouring device inside the cutter barrel of a shield machine.

[0025] Specifically, refer to Figures 1 - 5 , including the cutter barrel 100 of the shield machine; The high-pressure water flow beam assembly 200 provided on the inner wall of the cutter barrel 100 of the shield machine includes a connecting base 201 and a connecting nozzle 202 provided on the outer wall of the connecting base 201. A flow splitting component and a transmission component are arranged inside the connecting nozzle 202. The water flow entering the connecting nozzle 202 is circulated and divided into two directions repeatedly through the flow splitting component, and the transmission component is driven by the water flow in different directions, so that the connecting nozzle 202 rotates back and forth outside the connecting base 201; A housing 300 is sleeved on the outer wall of the connecting base 201, and a flow disturbing structure is arranged at the end of the housing 300. The flow disturbing structure is affected by the rotation of the connecting nozzle 202 to disturb the ejected water flow, and the scouring efficiency of the sludge is improved by changing the impact force of the water flow.

[0026] Among them, a plurality of high-pressure water flow beam assemblies 200 are installed inside the cutter barrel 100 of the shield machine to resist the intrusion of sediment outside the cutter barrel and wash the sediment inside the cutter barrel and on the surface of the cutter. The connecting base 201 is fixed inside the cutter barrel 100 of the shield machine, and the water flow is ejected outward through the connecting nozzle 202.

[0027] Inside the connecting nozzle 202, there are a flow splitting component and a transmission component. The water flow first passes through the flow splitting component inside the connecting nozzle 202, splitting the water flow entering the inside of the connecting nozzle 202 into two directions and transmitting it outward. When passing through the transmission component, the water flow drives the transmission component to move. When the transmission component moves, it will drive the connecting nozzle 202 to rotate on the surface of the connecting base 201. The connecting nozzle 202 rotates in one direction on the surface of the connecting base 201 under the influence of the transmission component. When it rotates to a certain angle, it triggers the internal flow splitting component and changes the direction of the water flow. The change in the water flow direction further changes the movement of the transmission component, causing the connecting nozzle 202 to move in the opposite direction, repeating this cycle.

[0028] The outer shell 300 is fixed outside the connecting base 201 and sleeved outside the connecting nozzle 202. The connecting nozzle 202 rotates reciprocally inside the outer shell 300. Through the reciprocal rotation of the connecting nozzle 202, it drives the movement of the flow disturbing structure at the top of the outer shell 300. The flow disturbing structure will interfere with the water flow sprayed out by the connecting nozzle 202, changing the impact force of the sprayed water. By frequently changing the impact force, the relatively stable state formed between the sludge particles can be continuously broken. When the impact force suddenly increases, it will generate a stronger shear force and impact force on the sludge particles, making the particles that were originally aggregated together easier to be dispersed. When the impact force suddenly decreases, the sludge particles will also produce relative displacement due to the change in force, further promoting the separation between the particles.

[0029] Embodiment 2 This is the second embodiment of this application, which is implemented based on the previous embodiment.

[0030] Specifically, referring to Figure 2 and Figure 3 , the end of the outer shell 300 is fixed to the outer wall of the connecting base 201, and a pushing structure is provided on the inner wall of the outer shell 300. The pushing structure is affected by the rotation of the connecting nozzle 202 and drives the opening and closing of the flow disturbing structure at the end of the outer shell 300.

[0031] Among them, the pushing structure cooperates with the flow disturbing structure. The movement of the connecting nozzle 202 inside the outer shell 300 drives the movement of the pushing structure. The connecting nozzle 202 rotates reciprocally in the left and right half circles on the inner wall of the outer shell 300. The pushing structure is affected by the drive of the connecting nozzle 202 and moves up and down reciprocally, thereby driving the flow disturbing structure to continuously open and close outside the outer shell 300. The opening and closing of the flow disturbing structure will not achieve complete closure, but only slightly close inward to change the diameter and flow rate of the water flow flowing out.

[0032] Preferably, the pushing structure includes a moving ring 303 sleeved on the outer wall of the connecting nozzle 202. A slider 304 is fixed on the outer wall of the moving ring 303. The end of the slider 304 extends into the vertical groove 301 opened on the inner wall of the outer shell 300. The moving ring 303 is restricted by the vertical groove 301 and cannot rotate.

[0033] Among them, two symmetric sliders 304 are provided on the surface of the moving ring 303 and extend to the inner wall of the vertical groove 301 on the inner wall of the outer shell 300. Since the outer shell 300 is fixed outside the connection base 201, the outer shell 300 cannot move. Therefore, the moving ring 303 can only slide linearly inside the outer shell 300 through the sliders 304 on its surface and cannot rotate.

[0034] Refer to Figures 2 - 5 and Figure 9 , an inclined groove 305 is provided on the inner wall of the moving ring 303, and the inclined groove 305 cooperates with the sliding column 2021 provided on the outer wall of the connecting nozzle 202. By sliding the sliding column 2021 on the inner wall of the inclined groove 305, the moving ring 303 is driven to move on the outer wall of the connecting nozzle 202. A connecting rod 306 is connected to the end of the moving ring 303, and a guide rod 308 is hinged to the end of the connecting rod 306. A connecting ring 307 is hinged to the end of the guide rod 308, and the connecting ring 307 is sleeved on the outer wall of the water spraying port 208 at the end of the connecting nozzle 202.

[0035] Among them, the end of the sliding column 2021 on the outer wall of the connecting nozzle 202 extends into the inclined groove 305 on the inner wall of the moving ring 303. When the connecting nozzle 202 rotates, the moving ring 303 is driven to move up and down inside the outer shell 300 through the sliding column 2021 on its surface.

[0036] The water spraying port 208 is fixed outside the connecting nozzle 202. After the water flow enters the connecting nozzle 202, it finally enters the water spraying port 208 and sprays onto the cutter head 100 of the shield machine. As Figure 9 shown, the part where the water spraying port 208 is connected to the connecting nozzle 202 presents a gradually shrinking pattern, and then presents an expanding pattern after passing through a narrow pipe section. The water spraying port 208 guides the high-pressure water flow to spray along a predetermined path through a gradually expanding pressure increasing chamber, reduces the turbulent flow of the water flow inside the cutter head, reduces the speed of the water flow in this chamber and raises the pressure, ensures that the water jet pressure at the outlet meets the basic requirements for shielding sediment, and improves the shielding efficiency of the water flow.

[0037] The connecting ring 307 outside the water spraying port 208 is installed at the top of the outer shell 300. A plurality of guide rods 308 are arrayed and hinged outside the connecting ring 307. The surface of the guide rod 308 is movably connected to the top of the connecting rod 306. Through the movement of the moving ring 303 on the surface of the connecting nozzle 202, the connecting rod 306 drives the guide rod 308 to perform an opening and closing movement outside the connecting ring 307.

[0038] Preferably, the flow disturbance structure includes a guide rod 308 and fan blades 309 arranged on the outer wall of the guide rod 308. The end of the guide rod 308 is hinged to the outer wall of the connecting ring 307, and the connecting ring 307 is fixed to the end of the outer shell 300. The end of the guide rod 308 is located in the notch 302 opened at the end of the outer shell 300.

[0039] Among them, the fan blades 309 are fixed on the surface of the guide rod 308. By arranging multiple fan blades 309 in an array, when the moving ring 303 moves outside the connecting nozzle 202, the connecting rod 306 drives the guide rod 308 and the fan blades 309 to move together, continuously opening and closing at the top position of the outer shell 300, disturbing the water flow ejected from the water spraying port 208, changing the outflow diameter of the water flow, interfering with the impact force of the water flow, and quickly flushing the sludge on the cutter cylinder through the change of the water flow impact force.

[0040] In summary, during use, the end of the outer shell 300 is fixed to the outer wall of the connecting base 201, the connecting nozzle 202 is located inside the outer shell 300, and the connecting nozzle 202 rotates in a reciprocating manner for about half a circle left and right on the inner wall of the outer shell 300, driving the moving ring 303 to reciprocate on the outer surface of the connecting nozzle 202 through the sliding column 2021 on the surface.

[0041] The connecting ring 307 is sleeved outside the water spraying port 208 and fixed to the end of the outer shell 300. The bottom of the guide rod 308 is hinged outside the connecting ring 307 and located in the notch 302 opened at the end of the outer shell 300. The fan blades 309 are arranged on the outer wall of the guide rod 308. Affected by the movement of the moving ring 303, the connecting rod 306 drives the guide rod 308 and the fan blades 309 on the surface to move and form a flow disturbance structure, disturbing the water flow ejected from the water spraying port 208. The water spraying port 208 guides the high-pressure water flow to be ejected along a predetermined path through a gradually expanding pressure increasing chamber, reducing the turbulent flow of the water flow inside the cutter cylinder, reducing the speed of the water flow and increasing the pressure in this chamber, ensuring that the water jet pressure at the outlet meets the basic requirements for shielding sediment. During the process of water flow ejection, the fan blades 309 of the flow disturbance structure disturb the water flow, change the outflow diameter of the water flow, interfere with the impact force of the water flow, and quickly flush the sludge on the cutter cylinder by using the change of the water flow impact force. Moreover, the opening and closing of the flow disturbance structure will not be completely closed, but only slightly change the outflow diameter and flow velocity of the water flow inward.

[0042] Embodiment 3 This is the third embodiment of this application, which is implemented based on the previous embodiment.

[0043] Specifically, refer to Figures 7 - 10, the flow splitting component includes a steering plate 207, the steering plate 207 is hinged to the inner wall of the connecting nozzle 202, the other end of the steering plate 207 is connected with a rocker 2071 and the other end of the rocker 2071 is provided with a steering block 2072, the end of the steering block 2072 extends to the inner wall of the arc groove 2022 opened at the end of the connecting nozzle 202 and is located on the end face of the guide block 2023 fixed to the outer wall of the arc groove 2022, the steering block 2072 and the guide block 2023 extend into the inner wall of the limit ring 2015 fixed to the outer wall of the connecting base 201 and slide on the inner wall of the limit groove 2016 opened on the inner wall of the limit ring 2015. When the guide block 2023 touches the inner wall of the limit groove 2016, the steering block 2072 rotates to drive the rocker 2071 to toggle the steering plate 207 at the end to change the direction of the water flow out.

[0044] Among them, the steering plate 207 and the rocker 2071 cooperate to flip on the inner wall of the connecting nozzle 202. The steering block 2072 at the bottom of the rocker 2071 extends to the outside of the connecting nozzle 202 and rotates with the connecting nozzle 202 inside the limit groove 2016 below the limit ring 2015. The connecting nozzle 202 rotates inside the limit ring 2015, driving the steering block 2072 to rotate together. Since the limit ring 2015 is installed outside the connecting base 201, the limit ring 2015 does not move.

[0045] When the connecting nozzle 202 rotates, the guide block 2023 on the outer surface moves and rotates with the steering block 2072. When the guide block 2023 touches the inner wall edge of the limit groove 2016, the steering block 2072 touches the inner wall edge of the limit groove 2016 and moves. The rocker 2071 rotates, driving the steering plate 207 to rotate. By rotating the steering plate 207, the path of the water flow is changed, causing the movement of the transmission component to change and the rotation direction of the connecting nozzle 202 to change, and so on in a cycle.

[0046] Preferably, referring to Figures 6 - 8 , water outlet holes 204 are symmetrically opened on the outer wall of the connecting nozzle 202, the steering plate 207 fits against the water outlet holes 204, a flow splitting plate 2041 is fixed to the side of the water outlet holes 204 facing away from the steering plate 207, and a diversion plate 2042 is provided at the end of the flow splitting plate 2041. Different-direction flow channels are formed by the cooperation of the flow splitting plate 2041 and the diversion plate 2042.

[0047] Among them, two water outlet holes 204 are symmetrically opened and located on the outer surface of the connecting nozzle 202. The water outlet holes 204 cooperate with the steering plate 207. Driven by the rocker 2071, the steering plate 207 makes one side of it stick to the surface of the water outlet holes 204, so that the water flow flows out from the other non-blocked water outlet hole 204.

[0048] Such as Figure 6As shown, the diverter plate 2041 is fixed on the surface of the connecting nozzle 202 and is located in the middle of the two water outlets 204, cooperating with the guide plate 2042 to form water flow channels in two directions. When one side of the water outlet 204 is blocked, the water will flow out from the water outlet 204 on the other side and form another water flow.

[0049] like Figure 8 , Figure 10 As shown, a water wheel 203 is arranged at the axis center of the outer wall of the connecting nozzle 202, and the other end of the water wheel 203 extends to the inner wall of the connecting nozzle 202 and is provided with a transmission gear 2031. The transmission gear 2031 is meshed with a reduction gear set 206 arranged inside the connecting nozzle 202, and the end of the reduction gear set 206 is meshed with the fixed nozzle 2012 on the inner wall of the connecting base 201 to drive the connecting nozzle 202 to rotate at the end of the connecting base 201.

[0050] The water wheel 203 is fixed in the middle of the connection nozzle 202 and rotates driven by the water flow out of the water outlet 204. The water flows out of different water outlets 204 drive the water wheel 203 to rotate in opposite directions.

[0051] The water wheel 203 rotates coaxially with the transmission gear 2031. The rotation of the water wheel 203 drives the transmission gear 2031 to rotate inside the connecting nozzle 202. The transmission gear 2031 is meshed with the reduction gear set 206. The rotation speed of the water wheel 203 is slowed down by the reduction gear set 206 and then transmitted to the last reduction gear. The last reduction gear is meshed with the fixed nozzle 2012. The fixed nozzle 2012 is fixed on the connecting base 201. The connecting nozzle 202 is slowly rotated outside the connecting base 201 through the fixed nozzle 2012. At the same time, the rotation of the connecting nozzle 202 drives the internal rocker 2071 to deflect and drive the steering plate 207 to flip, thereby changing the rotation direction of the water wheel 203 and the connecting nozzle 202.

[0052] Better, refer to Figures 1 - 3 , Figure 9 and Figure 10 The outer wall of the connection base 201 is provided with a mounting head 2011, and the outer wall of the mounting head 2011 is connected to a pipe 213, and the inner wall of the pipe 213 is provided with a guide rib 214 for reducing turbulence, and the inner wall of the connection nozzle 202 is also fixed with a built-in block 205, and the inner wall of the built-in block 205 is provided with a There is a cavity 2051 and a pillar 2052 is fixed to the inner wall of the cavity 2051 , a retaining ring 2053 is sleeved on the end of the pillar 2052 and a first elastic member 2054 is provided on the outer wall of the retaining ring 2053 for pushing the retaining ring 2053 to make it close to the inner wall of the cavity 2051 .

[0053] Among them, the diversion rib plate 2014 is fixed to the inner wall of the pipeline 2013 to reduce the turbulent flow in the pipeline 2013. After the water flow enters the interior of the connecting nozzle 202, it directly flows through the water outlet hole 204 towards the water spraying port 208 and sprays out. When the water flow pressure inside the connecting nozzle 202 is too high, only through the water outlet hole 204, the discharge speed of the water flow is certain and it cannot quickly reduce the pressure. At this time, the retaining ring 2053 will move on the surface of the support column 2052, enabling the water flow to enter the cavity 2051 and pass through the pressure relief port connected to the cavity 2051, and enter the water spraying port 208 through the connecting nozzle 202.

[0054] In summary, during use, the mounting head 2011 on the outer wall of the connecting base 201 is connected to the pipeline 2013, and the diversion rib plate 2014 on the inner wall of the pipeline 2013 reduces the turbulent flow of the water flow. The water flow flows from the pipeline 2013 into the connecting nozzle 202.

[0055] After the water flow enters the connecting nozzle 202, if the internal water pressure is normal, the water flow directly flows through the water outlet hole 204 towards the water spraying port 208 and sprays out. The water flow flowing out from the water outlet hole 204 drives the water wheel 203 to rotate. The water wheel 203 rotates coaxially with the transmission gear 2031, thereby driving the transmission gear 2031 to rotate. The transmission gear 2031 meshes with the reduction gear set 206. The reduction gear set 206 slows down the rotation speed of the water wheel 203 and transmits it to the last reduction gear. The last reduction gear meshes with the fixed nozzle 2012. Since the fixed nozzle 2012 is fixed to the connecting base 201, the connecting nozzle 202 is driven to slowly rotate at the end of the connecting base 201.

[0056] When the connecting nozzle 202 rotates, the guide block 2023 on its exterior moves and rotates along with the steering block 2072. When the guide block 2023 touches the inner wall edge of the limit groove 2016, the steering block 2072 also touches the inner wall edge of the limit groove 2016 and moves, driving the rocker 2071 to rotate, and then causing the steering plate 207 to rotate. After the steering plate 207 rotates, one side of it adheres to the surface of one water outlet hole 204, blocking this water outlet hole 204, so that the water flow flows out from the other unblocked water outlet hole 204, changing the water flow passage path.

[0057] The water flows flowing out from different water outlet holes 204 drive the water wheel 203 to rotate in opposite directions. Due to the change in the rotation direction of the water wheel 203, through the transmission of the transmission gear 2031 and the reduction gear set 206, the rotation direction of the connecting nozzle 202 is ultimately changed, and so on in a cycle.

[0058] When the water flow pressure inside the connecting nozzle 202 is too high and the water flow cannot be quickly discharged through the water outlet holes 204 alone to relieve the pressure, the water pressure pushes the retaining ring 2053 to move on the surface of the support column 2052. The water flow enters the cavity 2051 of the built-in block 205 and, through the pressure relief port connected to the cavity 2051, enters the water spray port 208 through the connecting nozzle 202 to achieve pressure relief.

[0059] Embodiment 4 This is the fourth embodiment of the present application, and this embodiment provides an adjustment system.

[0060] Specifically, it includes a plurality of high-precision pressure sensors evenly distributed on the outer wall of the cutter barrel, a central control system, and a high-pressure water pump; The pressure sensors are used to monitor the changes in external soil pressure and water pressure in real time and transmit the data to the central control system; The central control system has an adaptive algorithm built in, and dynamically adjusts the output power and frequency of the high-pressure water pump according to the received pressure data to precisely control the water jet pressure, so that the water jet pressure and the external pressure maintain a dynamic balance.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and they should all be covered within the scope of the claims of the present application.

Claims

1. A high-pressure water flow beam scouring device inside the cutter barrel of a shield machine, characterized in that Comprising: A cutter barrel (100) of a shield machine; A high-pressure water flow beam assembly (200) provided on the inner wall of the cutter barrel (100) of the shield machine, including a connection base (201) and a connection nozzle (202) provided on the outer wall of the connection base (201). A flow splitting component and a transmission component are arranged inside the connection nozzle (202). The water flow entering the inside of the connection nozzle (202) is cyclically split into two directions through the flow splitting component, and the transmission component is driven by the water flows in different directions, so that the connection nozzle (202) rotates back and forth outside the connection base (201); An outer shell (300) is sleeved on the outer wall of the connection base (201), and a flow disturbing structure is provided at the end of the outer shell (300). The flow disturbing structure disturbs the ejected water flow under the influence of the rotation of the connection nozzle (202), and improves the scouring efficiency of the sludge by changing the impact force of the water flow.

2. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 1, wherein: The end of the outer shell (300) is fixed to the outer wall of the connection base (201), and a pushing structure is provided on the inner wall of the outer shell (300). The pushing structure drives the opening and closing of the flow disturbing structure at the end of the outer shell (300) under the influence of the rotation of the connection nozzle (202).

3. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 2, characterized in that: The pushing structure includes a moving ring (303) sleeved on the outer wall of the connection nozzle (202). A slider (304) is fixed on the outer wall of the moving ring (303). The end of the slider (304) extends into a vertical groove (301) opened on the inner wall of the outer shell (300), and the moving ring (303) is restricted by the vertical groove (301) and cannot rotate.

4. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 3, wherein: An inclined groove (305) is opened on the inner wall of the moving ring (303). The inclined groove (305) is matched with a sliding column (2021) opened on the outer wall of the connection nozzle (202). The moving ring (303) is driven to move on the outer wall of the connection nozzle (202) by the sliding of the sliding column (2021) on the inner wall of the inclined groove (305). A connecting rod (306) is connected to the end of the moving ring (303), and a guide rod (308) is hinged to the end of the connecting rod (306). A connecting ring (307) is hinged to the end of the guide rod (308), and the connecting ring (307) is sleeved on the outer wall of a water spraying port (208) at the end of the connection nozzle (202).

5. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 4, characterized in that: The flow disturbing structure includes a guide rod (308) and fan blades (309) provided on the outer wall of the guide rod (308). The end of the guide rod (308) is hinged to the outer wall of the connecting ring (307), and the connecting ring (307) is fixed to the end of the outer shell (300). The end of the guide rod (308) is located in a notch (302) opened at the end of the outer shell (300).

6. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 5, characterized in that: The flow dividing component comprises a steering plate (207), the steering plate (207) being hinged to the inner wall of the connecting nozzle (202), the other end of the steering plate (207) being connected to a rocker (2071), and the other end of the rocker (2071) being provided with a steering block (2072), the end of the steering block (2072) extending to the inner wall of an arc groove (2022) provided at the end of the connecting nozzle (202) and being located at a guide block (2022) fixed to the outer wall of the arc groove (2022). 3) end surface, the steering block (2072) and the guide block (2023) extend to the inner wall of the limit ring (2015) fixed to the outer wall of the connection base (201), and slide on the inner wall of the limit groove (2016) opened on the inner wall of the limit ring (2015); when the guide block (2023) touches the inner wall of the limit groove (2016), the steering block (2072) rotates to drive the rocker (2071) to move the steering plate (207) at the end to change the direction of water outflow.

7. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 6, characterized in that: The outer wall of the connecting nozzle (202) is symmetrically provided with water outlet holes (204), the deflection plate (207) is fitted to the water outlet holes (204), a diverter plate (2041) is fixed to the side of the water outlet hole (204) away from the deflection plate (207), and a guide plate (2042) is arranged at the end of the diverter plate (2041), and flow channels in different directions are formed by the cooperation of the diverter plate (2041) and the guide plate (2042).

8. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 7, characterized in that: A water wheel (203) is arranged at the axis center of the outer wall of the connecting nozzle (202); the other end of the water wheel (203) extends to the inner wall of the connecting nozzle (202) and is provided with a transmission gear (2031); the transmission gear (2031) is meshed with a reduction gear set (206) arranged inside the connecting nozzle (202); the end of the reduction gear set (206) is meshed with a fixed nozzle (212) on the inner wall of the connecting base (201) to drive the connecting nozzle (202) to rotate at the end of the connecting base (201).

9. The high-pressure water flow beam scouring device inside the cutter barrel of the shield machine according to claim 8, wherein: The outer wall of the connection base (201) is provided with a mounting head (2011), and the outer wall of the mounting head (2011) is connected to a pipe (2013), the inner wall of the pipe (2013) is provided with a guide rib (2014) for reducing turbulence, and the connection nozzle (202) is also fixed with an internal block (205), the inner wall of the internal block (205) is provided with a cavity (2051), and the inner wall of the cavity (2051) is fixed with a pillar (2052), the end of the pillar (2052) is sleeved with a retaining ring (2053), and the outer wall of the retaining ring (2053) is provided with a first elastic member (2054) for pushing the retaining ring (2053) to make it close to the inner wall of the cavity (2051).

10. A regulating system is applied to the high-pressure water flow beam scouring device inside the cutter barrel of the shield machine as described in any one of claims 1 to 9, and is characterized in that, include: Multiple high-precision pressure sensors, central control system and high-pressure water pump evenly distributed on the outer wall of the knife barrel; The pressure sensor is used to monitor the external soil pressure and water pressure changes in real time and transmit the data to the central control system; The central control system is built-in with an adaptive algorithm, which dynamically adjusts the output power and frequency of the high-pressure water pump according to the received pressure data to precisely control the water jet pressure and keep the water jet pressure in dynamic balance with the external pressure.

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